BI-1493
Antibiotics
Biology · Secondary 4 · Hard · Antibiotics
A student measures the diameters of clear zones around antibiotic discs on three Petri dishes as shown:
Antibiotic X: 10 mm, 12 mm, 11 mm
Antibiotic Y: 6 mm, 9 mm, 6 mm
Antibiotic Z: 15 mm, 15 mm, 14 mm
Which antibiotic is most effective at preventing bacterial growth?
Antibiotic X: 10 mm, 12 mm, 11 mm
Antibiotic Y: 6 mm, 9 mm, 6 mm
Antibiotic Z: 15 mm, 15 mm, 14 mm
Which antibiotic is most effective at preventing bacterial growth?
- Antibiotic X
- Antibiotic Y
- Antibiotic Z
- All are equally effective
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